Yaws (A66) ICD-10-CM
The A66 code range covers yaws with 11 ICD-10-CM diagnosis codes. 10 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- bouba
- frambesia (tropica)
- pian
Codes in the A66 Range 11 codes · 10 billable
- A66 YawsNon-billable
- A66.0 Initial lesions of yaws
- A66.1 Multiple papillomata and wet crab yaws
- A66.2 Other early skin lesions of yaws
- A66.3 Hyperkeratosis of yaws
- A66.4 Gummata and ulcers of yaws
- A66.5 Gangosa
- A66.6 Bone and joint lesions of yaws
- A66.7 Other manifestations of yaws
- A66.8 Latent yaws
- A66.9 Yaws, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A66 range.
Yaws
A systemic non-venereal infection of the tropics caused by TREPONEMA PALLIDUM subspecies pertenue.
About the A66 Code Range
Yaws is a tropical infection caused by Treponema pallidum subspecies pertenue. It is not sexually transmitted.
The subdivisions distinguish initial lesions (A66.0), early skin lesions and other named findings (A66.1 through A66.5), and bone and joint lesions (A66.6). Separate codes describe other manifestations (A66.7), latent yaws (A66.8), and unspecified yaws (A66.9).
Questions About This Page
How many billable codes are in the A66 range?
Of the 11 codes in this range, 10 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the A66 range classify?
The range classifies yaws. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
